@misc{cryptoeprint:2011:231,
    author = {Marc Fischlin and Anja Lehmann and Dominique Schröder },
    title = {History-Free Sequential Aggregate Signatures},
    howpublished = {Cryptology ePrint Archive, Report 2011/231},
    year = {2011},
    url = {http://eprint.iacr.org/2011/231},
}